CICADELLINAE: PART 2. NEW WORLD CICADELLINI 769 
partly from actual inconstancy in the occurrence of the crossveins at the bases 
of the inner two anteapical cells. 
Not included in Medler’s revision of Erythrogonia, is Tettigonia calva 
Taschenberg, 1884a:436, of which the present author has studied the male 
holotype. Erythrogonia calua (Taschenberg), new combination, is conspecific 
with £. signoreti Schmidt, sens. Medler and preempts the latter (new synony- 
my). 
Erythrogonia occurs from the British West Indies and Mexico southward to 
Argentina, including all of South America, except Chile. Species are similar in 
many respects to species of /nuyana, new genus, but the presence of processes 
at the base of the anal tube, and the more nearly horizontal profile of the 
lower portion of the clypellus in Jnuyana both differ from Erythrogonia, also the 
occurrence of ventral pygofer processes, rare in Erythrogonia, is found in all 
species of Jnuyana. Also color patterns which occur in the latter genus do not 
occur in Erythrogonia. Erythrogonia is also similar to Torresabela, new genus, and 
to Pawiloma, new genus, in the treatments of both of which distinguishing 
characters are discussed. Tettisama, new genus, also belongs to the complex, 
but is readily separated by the larger size of the species and by the distinctive 
pygofer lobes of the male. 
Genera numbered 92-114 form a group of which Erythrogonia is represen- 
tative. The grouping is merely one of convenience, and is more heterogeneous 
than some of the others made here, especially the smaller ones, and as in- 
dicated above, complexes of genera occur within the generic group. There are 
other possible and not illogical associations, as indicated in the accompanying 
diagram by the generic names enclosed by broken lines, with three other 
generic groups. Efforts to find characters for the group, or for a better group- 
ing, have been fruitless because of numerous exceptions to all of the many 
characters checked. 
Medler (op. cit. p. 6) mentioned the ‘““Type”’ of Erythrogonia laeta (Fabricius), 
but did not designate a lectotype. The present writer examined this specimen 
in Copenhagen and designated it as lectotype of the type-species (1965c:14). 
Medler (oc. cit.) pointed out the possibility that Melichar had misdetermined 
the type-species. Medler used the nominal species E. laeta (Fabricius) as type- 
species and in this action he is followed here. The male genitalia of the lec- 
totype agree with the present illustration (fig. 633f, h,) of the specimen from 
Trinidad. 
Tettigonia leucospila Walker is known to me only from the only specimen in 
the British Museum, presumably the holotype, a specimen without abdomen 
from Peru. It appears correctly placed in Erythrogonia. 
Medler also failed to designate a lectotype of E. sexguttata (Fabricius). 
Young (op. cit., p. 16) designated as lectotype the specimen Medler studied, in 
the Fabrician collections in Copenhagen. Medler’s selection, as neotype of E. 
colorata (Germar), a specimen without abdomen in the Naturhistorisches 
Museum in Vienna is unfortunate, since the Germar collection is possibly ex- 
tant, and since there are a number of specimens from the Germar collection 
in the Zoologisches Institut und Museum, in Hamburg. 
